<template>
  <div>
    <!-- 面包屑导航区： -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
            @input="getUserList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 打印出每一列数据: -->
          <!-- <template slot-scope="scope">{{scope.row}}</template> -->
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#41b883"
              @change="update_userstatus(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteUser(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 用户分页按钮 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="DialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" :disabled="true"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="edituser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配用户权限的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <p>当前的用户:{{setRoleInfo.username}}</p>
      <p>当前的角色:{{setRoleInfo.role_name}}</p>
      <p>
        分配新角色:
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option
            v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id"
          ></el-option>
        </el-select>
      </p>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="updateUserPower">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/;
      if (regEmail.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的邮箱"));
    };
    //验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/;
      if (regMobile.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的手机号码"));
    };
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10
      },
      userlist: [],
      // 当前一共有多少条数据
      total: 0,
      // 是否显示添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 是否显示编辑用户对话框
      editDialogVisible: false,
      // 是否显示角色分配对话框
      setRoleDialogVisible: false,
      // 当前分配权限的用户信息：
      setRoleInfo: {},
      // 所有角色的数据列表：
      rolesList: [],
      // 需要变更为的角色id
      selectedRoleId: "",
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      // 编辑用户表单数据
      editForm: {
        id: "",
        username: "",
        email: "",
        mobile: ""
      },
      // 添加表单的用户规则对象
      addFormRules: {
        username: [
          {
            required: true,
            message: "请输入用户名",
            trigger: "blur"
          },
          {
            min: 3,
            max: 10,
            message: "用户名的长度在 3 到 10 个字符之间",
            trigger: "blur"
          }
        ],
        password: [
          {
            required: true,
            message: "请输入密码",
            trigger: "blur"
          },
          {
            min: 3,
            max: 10,
            message: "密码的长度在 3 到 15 位之间",
            trigger: "blur"
          }
        ],
        email: [
          {
            required: true,
            message: "请输入邮箱",
            trigger: "blur"
          }
        ],
        mobile: [
          {
            required: true,
            message: "请输入电话号码",
            trigger: "blur"
          }
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          {
            validator: checkEmail,
            message: "邮箱格式不正确，请重新输入",
            trigger: "blur"
          }
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          {
            validator: checkMobile,
            message: "手机号码不正确，请重新输入",
            trigger: "blur"
          }
        ]
      }
      // 添加邮箱验证规则
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("/users", {
        params: this.queryInfo
      });

      this.userlist = res.data.users;
      this.total = res.data.total;
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize;
      // 根据newSize重新发起请求
      this.getUserList();
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听switch状态的改变调用接口更新用户状态
    async update_userstatus(userinfo) {
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      this.$message.success("更新用户状态成功");
    },
    // 监听关闭表单事件：
    DialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 点击添加新用户：
    addUser() {
      this.$refs.addFormRef.validate(valid => {
        // 表单校验失败：
        if (!valid) {
          return;
        }
        // 发起网络请求
        this.$http.post("/users", this.addForm).then(res => {
          this.$message.success("用户添加成功");
          this.addDialogVisible = false;
          this.getUserList();
        });
      });
    },
    // 编辑用户对话框
    showEditDialog(edit_user) {
      console.log(edit_user);
      this.editDialogVisible = true;
      this.editForm.id = edit_user.id;
      this.editForm.email = edit_user.email;
      this.editForm.mobile = edit_user.mobile;
      this.editForm.username = edit_user.username;
    },
    // 编辑用户弹框提交
    edituser() {
      this.$refs.editFormRef.validate(valid => {
        if (!valid) {
          return;
        }
        this.$http
          .put(`/users/${this.editForm.id}`, this.editForm)
          .then(res => {
            this.$message.success("更新用户成功");
            this.editDialogVisible = false;
            this.getUserList();
          });
      });
    },
    // 监听修改用户对话框关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 删除用户确认
    deleteUser(id) {
      this.$confirm("此操作将永久删除该用户, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          this.$http.delete(`/users/${id}`).then(res => {
            this.getUserList();
          });
          this.$message.success("删除用户成功");
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除"
          });
        });
    },
    // 关闭设置用户权限窗口
    setRoleDialogClosed() {
      this.setRoleDialogVisible = false;
      // 关闭时设置当前设置的用户和当前选中的权限为空：
      this.selectedRoleId = "";
      this.userInfo = {};
    },
    // 展示分配权限的对话框
    async setRole(userinfo) {
      this.setRoleInfo = userinfo;
      //获取所有角色列表
      const { data: res } = await this.$http.get("/roles");
      this.rolesList = res.data;
      this.setRoleDialogVisible = true;
    },
    // 更新用户权限：
    async updateUserPower() {
      const { data: res } = await this.$http.put(
        `users/${this.setRoleInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      );
      this.$message.success("更新用户权限成功");
      this.getUserList();
      this.setRoleDialogVisible = false;
    }
  }
};
</script>
<style lang="less" scoped>
</style>